Fig. 4: Quantification of hemispheric symmetry of scalp average power.
From: Neural silences can be localized rapidly using noninvasive scalp EEG

Mean absolute difference of scalp average power (MAD) is reported for a healthy control participant (DH), in comparison to the three patients who have resected brain regions (UD, SN, and OT). The control participant shows substantially smaller MAD compared to the three patients with cortical regions of silence.